Thermostat displays F07 and the wireless icon flashes; heating does not respond to setpoint changes.

Safety first: Wireless troubleshooting is low risk. Only open the receiver with power isolated.

• Check receiver power and status:
  • Ensure the receiver LEDs are on and not indicating a fault.
  • If LEDs are off, check the power supply and fuse.
• Reduce distance and obstacles:
  • Temporarily move the room thermostat closer to the receiver (same room if possible).
  • Avoid placing the thermostat near metal objects, fridges, or distribution boards.
• Re‑pair the devices:
  • Press and hold the pairing button on the receiver until the pairing LED flashes.
  • On the thermostat, enter the pairing menu and start the pairing process.
  • Wait for confirmation that pairing is successful and F07 clears.
• Check for RF interference:
  • Move Wi‑Fi routers or cordless phone bases away from the receiver if they are very close.
• If F07 persists even at close range:
  • The RF module in the thermostat or receiver may be defective.
  • Replace the Ferroli wireless room thermostat or receiver as appropriate.